Vaillant ecoTEC pro 24 Installation And Maintenance Instructions Manual

Also see for ecoTEC pro 24: Instructions for use Instructions for installation and servicing Instructions for installation and servicing Instructions for installation and servicing

10 Inspection and maintenance28 Installation and maintenance instructions ecoTEC pro 0020244995_0210.1 Removing the compact thermal moduleNoteThe compact thermal module consists of fourmain components:– Speed-regulated fan,– Gas/air connection,– Gas supply (mixture pipe) with burner flange,– Premix burner.Danger!Risk of death and risk of material damagecaused by hot flue gas.The seal, insulating mat and self-locking nutson the burner flange must not be damaged.Otherwise, hot flue gases may escape andcause personal injury and material damage.▶ Replace the seal each time you open theburner flange.▶ Replace the self-locking nuts on theburner flange each time you open theburner flange.▶ If the insulating mat on the burner flangeor on the back wall of the heat exchangershows signs of damage, replace the insu-lating mat.1. Switch off the product using the on/off button.2. Close the gas isolator cock.3. Remove the front casing.4. Tilt the electronics box forward.12345. Unscrew the retaining screw (2) and remove the airintake pipe (1) from the intake stub.6. Unscrew either the cap nut on the gas valve (3) or thecap nut (4) between the gas pipes.12375467. Remove the ignition line plug (5) and the earth line plug(6) from the ignition electrode.8. Remove the plug (3) from the fan motor.9. Remove the plug (4) from the gas valve.10. Unscrew the four nuts (7).11. Remove the entire compact thermal module (2) fromthe heat exchanger (1).12. Check the burner and the heat exchanger for damageand dirt.13. If necessary, clean or replace the components accord-ing to the following sections.14. Fit a new burner flange seal.15. Check the insulating mat on the burner flange and onthe back wall of the heat exchanger. If you notice anysigns of damage, replace the relevant insulating mat.10.2 Cleaning the heat exchanger1. Protect the folded down electronics box against sprayedwater.23412. Never undo the four nuts on the stud bolt (1) or tightenthem.3. Clean the heating coil (3) of the heat exchanger (4) us-ing water or, if required, vinegar (to a maximum of 5%acid). Allow the vinegar to act on the heat exchanger for20 minutes.4. Rinse away any loose dirt with a sharp jet of water oruse a plastic brush. Do not point the water jet directlyat the insulating mat (2) on the back of the heat ex-changer.